CVE-2025-10503
MEDIUMReflected Cross-Site Scripting via Authentication Endpoint in WSO2 Identity Server
Title source: cnaDescription
The authentication endpoint accepts user-supplied input without enforcing expected validation constraints, leading to a lack of proper output encoding. This allows for the injection of malicious JavaScript payloads, enabling reflected cross-site scripting. An attacker can leverage this vulnerability to redirect the user's browser to a malicious website, modify the user interface of the web page, retrieve information from the browser, or cause other harmful actions. However, due to the protection of session-related cookies with the httpOnly flag, session hijacking is not possible.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4577/
Scores
CVSS v3
6.1
EPSS
0.0017
EPSS Percentile
7.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
wso2/identity_server
7.1.0 - 7.1.0.28
WSO2/WSO2 Identity Server
7.1.0 - 7.1.0.28
Published
Apr 29, 2026
Tracked Since
Apr 29, 2026